Reproducible is different from "available for review." The purpose of the bill was most likely for any corp to cast doubt on a finding, and/or pay for shill-scientists to not be able to reproduce it, giving reason to incapacitate the EPA.
I think the EPA should be allowed to err on the side of caution. Their job should be to regulate chemicals and practices for the protection of the environment. It isn't mistake to prevent a company from harming the env. I'd like the logic to be inverted; Everything that interacts with the environment should be guilty until proven benign. Default to deny. As we get more technologically advanced, the number of mistakes that can only-happen-once is ever increasing.